Rectus Sheath: Cross Section Anatomy - pediagenosis
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Tuesday, September 11, 2018

Rectus Sheath: Cross Section Anatomy

Rectus Sheath: Cross Section Anatomy
Rectus Sheath: Cross Section Anatomy  Section above arcuate line, Aponeurosis of external abdominal oblique muscle, Anterior layer of rectus sheath Rectus abdominis muscle, Linea alba, Skin, External abdominal oblique muscle, Internal abdominal oblique muscle, Transversus abdominis muscle, Peritoneum, Posterior layer of rectus sheath, Falciform ligament, Extraperitoneal fascia Transversalis fascia, Aponeurosis of external abdominal oblique muscle, Aponeurosis of internal abdominal oblique muscle, Aponeurosis of transversus abdominis muscle, Section below arcuate line, Anterior layer of rectus sheath, Transversus abdominis muscle, Peritoneum, Extraperitoneal fascia, Medial umbilical ligament and fold, Superficial fascia (fatty and membranous layers), Aponeurosis of internal abdominal oblique muscle does not split at this level but passes completely anterior to rectus abdominis muscle and is fused there with both aponeurosis of external abdominal oblique muscle and that of transversus abdominis muscle. Thus, posterior wall of rectus sheath is absent below arcuate line, leaving only transversalis fascia.
           Section above arcuate lineAponeurosis of external abdominal oblique muscleAnterior layer of rectus sheath Rectus abdominis muscleLinea albaSkinExternal abdominal oblique muscleInternal abdominal oblique muscleTransversus abdominis muscle
PeritoneumPosterior layer of rectus sheathFalciform ligamentExtraperitoneal fascia Transversalis fasciaAponeurosis of external abdominal oblique muscle, Aponeurosis of internal abdominal oblique muscleAponeurosis of transversus abdominis muscleSection below arcuate lineAnterior layer of rectus sheathTransversus abdominis musclePeritoneumExtraperitoneal fasciaMedial umbilical ligament and foldSuperficial fascia (fatty and membranous layers)Aponeurosis of internal abdominal oblique muscle does not split at this level but passes completely anterior to rectus abdominis muscle and is fused there with both aponeurosis of external abdominal oblique muscle and that of transversus abdominis muscle. Thus, posterior wall of rectus sheath is absent below arcuate line, leaving only transversalis fascia.




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